Hypocenter migration and crustal seismic velocity distribution observed for the inland earthquake swarms induced by the 2011 Tohoku-Oki earthquake in NE Japan: Implications for crustal fluid distribution and crustal permeability

Tomomi Okada, Toru Matsuzawa, Norihito Umino, Keisuke Yoshida, Akira Hasegawa, Hiroaki Takahashi, Takuji Yamada, Masahiro Kosuga, Tetsuya Takeda, Aitaro Kato, Toshihiro Igarashi, Kazushige Obara, Shinichi Sakai, Atsushi Saiga, Takashi Iidaka, Takaya Iwasaki, Naoshi Hirata, Noriko Tsumura, Yoshiko Yamanaka, Toshiko TerakawaHaruhisa Nakamichi, Takashi Okuda, Shinichiro Horikawa, Hiroshi Katao, Tsutomu Miura, Atsuki Kubo, Takeshi Matsushima, Kazuhiko Goto, Hiroki Miyamachi

研究成果: Chapter in Book/Report/Conference proceedingChapter

3 引用 (Scopus)

抜粋

After the occurrence of the 2011 magnitude 9 Tohoku earthquake, seismicity in the overriding plate changed. This chapter considers some possible evidence of the influence of crustal fluid/water on the occurrence of the triggered seismicity after the 2011 Tohoku-Oki earthquake. It estimates the permeability from the observed hypocenter diffusion. Shallow seismic activity and crustal deformation are strongly affected by the water dehydrated and upwelling from the subducting Pacific plate. Spatiotemporal expansion of hypocenter areas of some earthquake swarms can be attributed to fluid diffusion. In the upper crust, the earthquakes seem to be distributed in seismic high-velocity areas rather than in seismic low-velocity areas. In the lower crust, the seismic low-velocity areas appear to be elongated along N-S or NE-SW, the strike of the island arc. The chapter also estimates three-dimensional seismic velocity structure using the double-difference tomography method.

元の言語英語
ホスト出版物のタイトルCrustal Permeability
出版者wiley
ページ307-323
ページ数17
ISBN(電子版)9781119166573
ISBN(印刷物)9781119166566
DOI
出版物ステータス出版済み - 10 31 2016

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Environmental Science(all)

フィンガープリント Hypocenter migration and crustal seismic velocity distribution observed for the inland earthquake swarms induced by the 2011 Tohoku-Oki earthquake in NE Japan: Implications for crustal fluid distribution and crustal permeability' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Okada, T., Matsuzawa, T., Umino, N., Yoshida, K., Hasegawa, A., Takahashi, H., Yamada, T., Kosuga, M., Takeda, T., Kato, A., Igarashi, T., Obara, K., Sakai, S., Saiga, A., Iidaka, T., Iwasaki, T., Hirata, N., Tsumura, N., Yamanaka, Y., ... Miyamachi, H. (2016). Hypocenter migration and crustal seismic velocity distribution observed for the inland earthquake swarms induced by the 2011 Tohoku-Oki earthquake in NE Japan: Implications for crustal fluid distribution and crustal permeability. : Crustal Permeability (pp. 307-323). wiley. https://doi.org/10.1002/9781119166573.ch24